Low severity3.1NVD Advisory· Published Jul 21, 2026· Updated Sep 22, 2026
CVE-2026-59849
CVE-2026-59849
Description
A flaw was found in libssh. Logic errors in automatic certificate-based public key authentication can cause libssh clients to loop indefinitely when configured certificates are missing or repeatedly rejected by a server, leading to denial of service.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
16- osv-coords11 versionspkg:apk/chainguard/libssh2pkg:apk/chainguard/libssh-devpkg:rpm/opensuse/libssh&distro=openSUSE%20Tumbleweedpkg:rpm/almalinux/libssh-configpkg:apk/wolfi/libssh-devpkg:rpm/opensuse/libssh&distro=openSUSE%20Leap%2016.0pkg:apk/wolfi/libsshpkg:apk/chainguard/libsshpkg:rpm/almalinux/libsshpkg:rpm/almalinux/libssh-develpkg:apk/wolfi/libssh2
< 0+ 10 more
- (no CPE)range: < 0
- (no CPE)range: < 0.12.1-r0
- (no CPE)range: < 0.11.5-1.2
- (no CPE)range: < 0.12.0-3.el10_2
- (no CPE)range: < 0.12.1-r0
- (no CPE)range: < 0.11.5-160000.1.1
- (no CPE)range: < 0.12.1-r0
- (no CPE)range: < 0.12.1-r0
- (no CPE)range: < 0.12.0-3.el10_2
- (no CPE)range: < 0.12.0-3.el10_2
- (no CPE)range: < 0
- cpe:2.3:a:redhat:hardened_images:-:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux:10.0:*:*:*:*:*:*:*
Patches
Vulnerability mechanics
References
4- access.redhat.com/errata/RHSA-2026:55855nvdVendor Advisory
- access.redhat.com/security/cve/CVE-2026-59849nvdVendor Advisory
- bugzilla.redhat.com/show_bug.cginvdIssue TrackingVendor Advisory
- access.redhat.com/errata/RHSA-2026:42922nvdIssue Tracking
News mentions
1- Libssh: Eleven Vulnerabilities Disclosed Together, Including Auth Bypass and DoSVypr Intelligence · Jul 21, 2026